mqtt.h File Reference
`#include "lwip/apps/mqtt_opts.h"`
`#include "lwip/err.h"`
`#include "lwip/ip_addr.h"`
`#include "lwip/prot/iana.h"`

## Data Structures

struct | mqtt_connect_client_info_t

## Macros

#define | MQTT_PORT LWIP_IANA_PORT_MQTT
#define | MQTT_TLS_PORT LWIP_IANA_PORT_SECURE_MQTT
#define | mqtt_subscribe(client, topic, qos, cb, arg) mqtt_sub_unsub(client, topic, qos, cb, arg, 1)
#define | mqtt_unsubscribe(client, topic, cb, arg) mqtt_sub_unsub(client, topic, 0, cb, arg, 0)

## Typedefs

typedef void(* | mqtt_connection_cb_t) (mqtt_client_t *client, void *arg, mqtt_connection_status_t status)
typedef void(* | mqtt_incoming_data_cb_t) (void *arg, const u8_t *data, u16_t len, u8_t flags)
typedef void(* | mqtt_incoming_publish_cb_t) (void *arg, const char *topic, u32_t tot_len)
typedef void(* | mqtt_request_cb_t) (void *arg, err_t err)

## Enumerations

enum | mqtt_connection_status_t { MQTT_CONNECT_ACCEPTED = 0, MQTT_CONNECT_REFUSED_PROTOCOL_VERSION = 1, MQTT_CONNECT_REFUSED_IDENTIFIER = 2, MQTT_CONNECT_REFUSED_SERVER = 3, MQTT_CONNECT_REFUSED_USERNAME_PASS = 4, MQTT_CONNECT_REFUSED_NOT_AUTHORIZED_ = 5, MQTT_CONNECT_DISCONNECTED = 256, MQTT_CONNECT_TIMEOUT = 257 }
enum | { , MQTT_DATA_FLAG_LAST = 1 }

## Functions

err_t | mqtt_client_connect (mqtt_client_t *client, const ip_addr_t *ipaddr, u16_t port, mqtt_connection_cb_t cb, void *arg, const struct mqtt_connect_client_info_t *client_info)
void | mqtt_disconnect (mqtt_client_t *client)
mqtt_client_t * | mqtt_client_new (void)
void | mqtt_client_free (mqtt_client_t *client)
u8_t | mqtt_client_is_connected (mqtt_client_t *client)
void | mqtt_set_inpub_callback (mqtt_client_t *client, mqtt_incoming_publish_cb_t pub_cb, mqtt_incoming_data_cb_t data_cb, void *arg)
err_t | mqtt_sub_unsub (mqtt_client_t *client, const char *topic, u8_t qos, mqtt_request_cb_t cb, void *arg, u8_t sub)
err_t | mqtt_publish (mqtt_client_t *client, const char *topic, const void *payload, u16_t payload_length, u8_t qos, u8_t retain, mqtt_request_cb_t cb, void *arg)

## Detailed Description

MQTT client